Deep-Sky Object
OB Association
A loose group of hot massive stars.
A young, sparse cluster of O- and B-type stars formed together, typically spread over hundreds of parsecs.
Overview
A young, sparse cluster of O- and B-type stars formed together, typically spread over hundreds of parsecs.
See also
Stellar Association
A loose grouping of young related stars.
Stellar Bubble
An ISM bubble blown by a single massive star.
Open Cluster
Gravitationally associated group of stars sharing a common origin.
Globular Cluster
Gravitationally associated group of stars sharing a common origin.
Embedded Cluster
Gravitationally associated group of stars sharing a common origin.
Young Massive Cluster
Gravitationally associated group of stars sharing a common origin.